"Just Do It” company (4)
I believe the answer is:
nike
'just do it company' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nike that I've seen before include "Goddess of victory - clothing company" , "Victoria" , "Greek winged goddess of victory, and sports goods logo" , "Greek goddess, personification of victory" , "bringer of victory" .)